Re: [PATCH v15 06/13] x86/sev: Prevent GUEST_TSC_FREQ MSR interception for Secure TSC enabled guests

From: Borislav Petkov
Date: Tue Dec 10 2024 - 12:19:53 EST


On Tue, Dec 10, 2024 at 10:43:05PM +0530, Nikunj A Dadhania wrote:
> This is incorrect, for a non-Secure TSC guest, a read of intercepted
> MSR_AMD64_GUEST_TSC_FREQ will return value of rdtsc_ordered(). This is an invalid
> MSR when SecureTSC is not enabled.

So how would you change this diff to fix this?

--
Regards/Gruss,
Boris.

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